Why is my LG L34C Optimus Fuel giving me false information?

LG L34C Optimus Fuel is about 3 monts old. Once in a while when trying to set uo in a "hot spot" I'll find when i go in under sttings that the WIFI button has turned off and is grayed out and will NOT turn on unless I reboot the phone. Additionally, on occasion I will get a popup telling me that my SD card has been remove improperly when, in fact, i haven't even had it out.